City heights



(No Model.)

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LOUIS P. LAVVRENOE, OF JERSEY CITY HEIGHTS, NEXV JERSEY.

PEPE AND HOSE COUPLING.

SPECIFICATION forming part of Letters Patent No. 232,279, dated September 14, 1880.

To all whom it may concern: The shank, barrel, and jaw are made in one Be itknown that I, LOUIS P. LAWRENCE, of casting of the required size and strength. Jersey City Heights, in the county of Hudson The jaw-shaped portion D communicates by 55 and State of New Jersey, have invented cera circular opening, 61, with the shank a of each tain new and useful Improveinentsin Pipe and part, and is surrounded by a valve'seat, d,

Hose Couplings, of which the following is a and by an elastic washer, (1 set into a circuspecilication. lar groove, against which a guided and spring- This invention has reference to an improved acted valve-piston, E, is forced. The valve-pis- 6o coupling for steam and air pipes of railroadton E isguided in a cylindrical tube, E, at the 10 cars,for fire-hose, and for similar purposes, as it inside of the barrel 0 of each part of the coupcan be quickly and conveniently coupled and ling, said guide-tube being connected adjustauncoupled, and as either part thereof closes in bly to the barrel 0 by means of a screw-thread.

a perfectly reliable manner as soon as it is de- The under side of each jaw has a transverse tachcd from the other. notch or recess, 6, which interlocks withacor- 1 The invention consists of a coupling consistresponding transverse projection, c, at the un' ing of two recessed and interlocking parts, der side of the piston E when the jaw is ineach of which has a lower jaw with a valve serted into the space provided at the interior seat and a guided and spring-pressed valveof the same in the interlocking part of the piston, which is operated by a pivot-link and coupling.

20 fulcrui'ned lever from the outside. A diagonal rim, f, extends around the jaw The valvepiston is guided in a tubnlarporand the edge of the angular opening I) of each tion, which is adjustable by a screw-thread in part, and forms a contact-stop when the parts a cylindrical barrel of the section, so that the are coupled together. valve may be rigidly locked on being turned The valve-piston E is guided in the cylin- 2 with its guide-tube to its seat or to the interdrical barrel O of each part by means of prolocking jaw of the other section of the coupjections g of its valve portion, which enter ling. The under sides of the jaws and valveinto corresponding grooves g of the barrel, for pistons are recessed to interlock with each the purpose of preventing any axial niotion of other. the piston, as shown clearly in Fig. 4.

0 In the accompanying drawings, Figure 1 The upper cylindrical part of the piston E represents a top view of my improved pipe is guided bymeans of an annular rim or collar and hose couplin Figs. 2 and 3 are horizonin the guide-tube E, it being drawn back into tal sections of the parts composing the coupthe same until its projecting lower part forms ling,oue part bein g shown in open and the other contact with the lower edge of the guide-tube 35 in closed position. Fig. i is a vertical transand its upper part with the top of the same verse section through one of the sections of by means of a curved handle, F, which is fulthe coupling on line at .r, Fig. 2. Fig. 5 is a crumed to outwardly-projecting lugs h of the detail section of the adjustable guidetube, and guide-tube E, and connected at its inner end Fig. 0 a detail top view of the valve-piston of by a pivot-link, i, to atransverse pin, i, at the 40 each part of the coupling. lower part of thepiston E. A strong spiral Similar letters of reference indicate correspring, E is interposed between the top of spending parts. the guide-tube and the lower part of the valve- In the drawings, A represents one part, and piston, and serves to press the latter down B the interlocking part, of my improved coupwhen the handle is released, so as to produce 45 ling for steam, water, and air pipes and hose. the interlocking of the same with the jaw of The shankaofeachsectionisribbed orthreadthe connecting part of the coupling, or the ed for connecting the pipe or hose thereto. tight closing upon its seat.

Each part is provided with a cylindrical por- The outermost end of the fulcrunied handle tion or barrel, 0, at right angles to the shank,, F of the piston is arranged in closeproximity 50 and with a flattened jaw-shaped portion, D, beto the shank of each part A B, so that it can tween which and the barrel 0 an angular rebe easily grasped therewith by the hand for the purpose of coupling or uncoupling the Application filed June 9, 1680.

ccss or openin g, b, is formed,

(No model.)

parts. By pressing the handle toward the shank the piston can be drawn back far enough into its guide-tube so that the parts may be separated.

Whenever a reliable interlocking of the parts or the tight closing of the piston to its seat is desired, the guide-tube E of the piston is turned axially in the barrel of each part by means of its handle, by which motion interior projecting lugs l at the inside of the guide-tube en the lower part of the valvepiston E and force it the tighter on the recessed interlockingljaw of the other part of the coupling the more the motion of the guide-tube around its axis is continued, the screw-connection with the barrel 0 securing the forward motion of the piston. The handle F bears during this motion, by an inwardly-projectin g lug, m, near its fulcrum, on a rim, m, of the cylindrical barrel (1 of each part, so as to prevent the rattling of the handle. When the handle is brought back again into its former position in line with the shank the projection m forms contact with a projecting lug, m When, however, the valve-piston'E is to be locked to its seat the lugs Z of the guide-tube E pass up through notches l of an annular rim, 1, at the upper end of the tubular part of the valve-piston and press, on turning the handle and guide-tube, down upon the collar, so as to force the lower part of the piston tightly down on its seat. When the handle is returned against the notch m the interior lugs, l, are in line with the notches l of the collar, and admit then the forward motion of the piston by the spring or the drawing back of the same by the handle. By taking hold of both parts and handles and drawing back both pistons the jaws can be inserted into the interior spaces of each part, so that a reliable coupling of the parts is obtained on letting the handles go.

By giving to the guide-tubes of the pistons, by means of the handles, an axial turn the pistons are rigidly and reliably locked to the jaws, so as to prevent thereby any possibility of detaching the parts.

By returning the handles into line with the shanks and lifting the piston sufficiently so that the interlocking shoulders at the under sides of their jaws clear each other, the parts of the coupling can be uncoupled quickly and with great facility.

By the rapidity with which the coupling and uncoupling can be accomplished, as well as by the reliable and intimate interlocking of the parts, the couplingis specially adapted for the air and steam pipes of railroad-cars, for firehose, and for applications of a similar nature.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a pipe and hose coupling, a one-piece casting composed of a shank, a cylindrical barrel, and a jaw separated from the barrel by an angular recess or opening, substantially as set forth.

2. In a pipe and hose coupling, the combination of a sectional part of the coupling having a cylindrical barrel and a jaw, with interior valve-seat, with a spring-pressed valve-piston guided in the barrel, and with means by which the same is withdrawn from its seat, substan tially as set forth.

3. The combination of a recessed sectional part of the coupling having a cylindrical barrel, with an interior spring-pressed valve-piston, with an adjustable guide-tube inclosin g the piston, and with means by which the valvepiston is locked to its seat or to the interlockin g portion of the coupling, substantially as set forth.

4. The combination of a recessed sectional part of the coupling having a cylindrical barrel, with interior guide-grooves, with a springpressed piston having projecting portions at its lower part, and with a fulorumed handle and pivot-link to withdraw the piston from the seat, as specified.

5. In a pipe and hose coupling, the combination of a sectional part having a cylindrical barrel with an interior spring-pressed piston having a tubular portion with notched top rim or collar, with an intermediate guidetube having in\vardly-projecting lugs and exterior screw-connection with the barrel, and with a handle fulcrumed to the guide-tube and adapted to turn the same so as to lock the piston to the interlocking portion of the coupling or to its seat, substantially as set forth.

6. The combination, in a pipe and hose coupling, of a sectional part having a cylindrical barrel, 0, an annular recess or opening, 0, and jaw D, having a transverse notch at the under side to interlock with the guided and springpressed piston of the other part of the coupling, substantially as specified.

7. In a pipe and hose coupling, the interior guided and spring-pressed piston of each part of the coupling, having a transverse projection at its under side to interlock with the transversely-notched portion of the other part of the coupling, substantially as set forth.

8. In a pipe and hose coupling, a sectional part having a cylindrical barrel with a projecting lug and exterior rim in combination with an interior guide-tube adjustable by a screw-thread within the barrel, and with a handle fulcrumed to the guide-tube, and having a projection near its fulcrum to be stopped when in line with the pipe or hose, and preventing it from rattling in turning the guidetube, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 4th day of June, 1880.

LOUIS P. LAWRENCE.

Witnesses En. S. SIMON, PAUL GoErEL. 

